Automatic igniter



March 14, 1939. A P K NO ICH 2,150,687 1 I AUTOMATIC IGNITER Filed May25, 1937 4 Sheets-Sheet l Inventor Adam P Kunowb'c/i Aiiornggs March1939- A. P KUNOWICH AUTOMATIC IGNITER Filed May 25, 1937 4 Sheets-Sheet2 W W M M M Inventor A dam P Kzpnowz'ch By @Mm Afforne us March 14,1939- A. P. kUNOWlCH AUTOMATIC IGNITER Filed May 25, 1937 4 Sheets-Sheet5 l Inventor *0 Adam P Kurvowa'ch/ pmm Attorneys March 14, 1939. vKUNOWICH AUTOMATIC IGNITER FiledMay 25, 1957 4 Sheets-Sheet 4 InventorAdam PKonawz'ch Aiforneus Patented Mar. 14, 1939 UNITED STATES PATENTOFFICE 3 Claims.

This invention appertains to new and useful improvements in firestarters for ranges and more particularly to an automatic igniterwhereby fires can be started in ranges and in other forms of stoves.

The principal object of the present invention is to provide an igniterof the character stated which can be set to take elfect at some futuretime, and which in operation is substantially fool-proof and notsusceptible to the ready development of defects.

Another important object of the invention is to provide an automaticigniter of the character stated, which is positive acting, andsubstantially simple in construction.

These and various other important objects and advantages of theinvention will become apparent to the reader of the followingspecification.

In the drawings:

Figure 1 represents a front elevational View of a range with a portionbroken away showing the igniter installed.

Figure 2 is a side elevational View of a range with a portion brokenaway showing the igniter installed therein.

Figure 3 is a fragmentary side elevational view of the range constructedfor the igniter.

Figure 4 is a horizontal sectional View through the rear portion of therange showing in top plan the igniter assembly.

Figure 5 is a fragmentary bottom plan view of the igniter.

Figure 6 is a section on the line 6-6 of Figure 4.

Figure 7 is an enlarged longitudinal sectional View through the carrierfor the igniting element.

Figure 8 is a fragmentary enlarged sectional View on the line 88 ofFigure 4.

Figure 9 is a fragmentary sectional view on the line 9-9 of Figure 4.

Figure 10 is a fragmentary vertical sectional view of the range.

Figure 11 is a front elevational view of the controller.

Figure 12 is a rear elevational View of the controller.

Figure 13 is a horizontal sectional view through the controller.

Figure 14 is a perspective view of the contactor of the controller.

Referring to the drawings, wherein like numerals designate like parts,it can be seen in the drawings that numeral 5 generally refers to therange in the firebox 6 of which is located the igniter generallyreferred to by numeral 1. Numeral 8 represents the usual gratestructure. This 'end of the range is provided with the door 9 whichpermits access to the igniter l.

The igniter consists of an elongated plate of heat insulating materialgenerally referred to by numeral III which is provided with a lateralflange I I at its upper end and an inclining flange 12 at its lowerportion. The plate [9 with its flanges II and I2 is provided with ametallic jacket l3.

In the bottom side of the flange I2 is securedas by bolts M the plate l5of insulation to which the elongated U-shaped igniting element I6 issecured by a clamp or the like ll.

A block of insulation [8 is provided on one end of the plate [0 to whichconnections [9 are made from the cord 20 and which jumper 20 extends tothe igniting element [6. This igniting element may be of anyconventional design.

It will be observed in Figure 1, that this igniter has the decliningflange portion l2 underlying a portion of the grate 8, and of coursewhen inflammable material is placed on the grate 8 and the element l6ignited, the inflammable material will quickly become ignited.

Numeral 2! generally refers to the controller which consists of theshell 22 having the clockdial 23 at its front side. Numeral 24represents the clock mechanism case. Observing Figure 13, it can be seenthat numeral 25 denotes the winding key for the alarm mechanism of theclock 24, while numeral 26 denotes the hour hand setting shaft which inthe present case has the collar 21 secured thereon to turn with theshaft and. from this projects a plurality of fingers 28. The switchmechanism generally referred to by numeral 29 is located on thedi-electric block 30 and includes the contactor arm 30 pivotallyconnected as at 3| to the post 32 and operative against the stationarycontact 33. A pin 34 extends through the free end of the contactor 30and on one end portion is the roller 35 which is prevented fromdisplacement by the collar 36. The other end portion is denoted bynumeral 31 and projects beyond the opposite side of the blade 30 and isin the path of one of the fingers 28 when. the said blade 30 is engagedwith contact 33.

It can be seen that numeral 38 denotes the time winder, while numeral 39denotes the usual alarm off and on control.

In the upper portion of the cage 22 is the red lamp 4!) which becomesilluminated when the switch 29 is in closed position, and this light maybe seen through opening 41 in front of the cage 22.

It can be seen in Figure 12 that a spiralled spring 42 has its inner endsecured to the winding key 25 while its outer end is suitably secured,as by welding as at 43, to the outer convolution of the spring. Thisforms an eccentric.

It can now be seen, that when the clock mechanism has been set and thealarm goes off, the spring 42 will be carried downwardly so that itsoutermost convolution will strike the roller and cause the blade 30 tobe driven downwardly to engage the contact 33 thus closing an electricalcircuit including the igniter l6. At the same time, the pin 31 isbrought down to a position to be in the path of one of the fingers 2Bprojecting from the collar 21 on the hour hand setting shaft 26. As thisshaft 26 rotates it will strike the pin end 31 and open the switch 30after the switch has been closed for a suitable length of time. Thus theigniter is energized for starting the fire in the firebox 6 and thenautomatically deenergized.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, size,and materials may be resorted to without departing from the spirit andscope of the invention as claimed hereinafter.

Having thus described the invention, what is claimed as new is:

1. An igniter of the character described comprising a verticallydisposed plate of heat refractory material, a bracket, an adjustableconnection between the upper edge of the plate and the bracket, a flangeat the lower edge of the plate, and an igniting element secured to thebottom of said lower flange, said adjustable connection comprising aplurality of fastening elements, said flange at the upper edge of theplate formed with transverse slots through which and the bracket thesecuring elements are disposed.

2. An igniter of the character described comprising a verticallydisposed plate of heat refractory material, a bracket, a connectionbetween the upper edge of the plate and the bracket, a flange at thelower edge of the plate, and an igniting element secured to the bottomof said lower flange, said plate and its flanges being provided with ametallic encasement and a strip of insulation between the encasement atthe lower flange and the said igniting element.

3. An igniter of the class described comprising a vertically disposedplate of heat refractory material, a flange at the lower edge of theplate, a metallic casing enclosing the plate, a strip of insulation onone face of the flange, a U-shaped igniting element fastened to thestrip and conductors connected with the ends of the legs of the U-shapedelement.

ADAM P. KUNOWICH.

